
//创建一个nXm的矩阵
int **makeArray1(int n, int m) {
    int i;
    int **A = (int **) Malloc(n * sizeof(int *)); // NB.
    for (i = 0; i < n; i++)
        A[i] = (int *) Malloc(m * sizeof(int));

    return A;
}
